If I had a perpetual motion device I wouldn't go to the media. I'd build a bunch of them, keep the details secret and sell the power to the big electric companies. Once I had a few hundred megawatts of actual generating capacity I'd go to the media.

For once, a good youtube comment (says everything I was about to quite concisely):

"I'm no expert on this stuff, but usually when I hear about these gadgets it turns out that they are basically running on the potential energy of one or? more magnets. Then the magnets will eventually de-magnetize, and the energy required to re-magnetize them exceeds the energy that was supplied. So before I consider this as anything special, I'd want to see a demonstration that shows more energy being supplied than exists in the potential energy of the magnets themselves."